Matt Doka is a co-founder and general partner at Operator Stack. He previously served as the co-founder and CTO of Fivestars.
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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
Send your deckMatt Doka is a co-founder and general partner at Operator Stack. He previously served as the co-founder and CTO of Fivestars.
Matt Doka invests through Operator Stack, which writes checks of $250K to $1M at pre-seed, seed.
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Co-Founder & CTO at Fivestars; CTO at SumUp (North America).
Last updated 2026-10-15. Is this you? Ask for a correction.